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Synthesis of Carbon Quantum Dots (CQDs) from Coal and Electrochemical Characterization

Rostami, Mohammadreza
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1564529680895913

Abstract Details

2019, Master of Science (MS), Ohio University, Chemical Engineering (Engineering and Technology).
Carbon quantum dots (CQDs) were synthesized using two top-down approaches from bituminous coal. More specifically, perchloric acid and hydrogen peroxide were used as oxidizer agents for CQDs synthesis. An acid recovery system was suggested for method of synthesis by perchloric acid to make this synthesis route more efficient. 30% CQDs production yield was achieved by adding a liquid charging pipette to the method of synthesis by hydrogen peroxide. By adding MoS2 to CQDs that were synthesized by perchloric acid, the specific capacitance increased up to 130 F/g from 12 F/g. Size of CQDs synthesized by hydrogen peroxide were 3.26 nm on average and showed a specific capacitance as high as 200 F/g with more than 15000 charge-discharge cycle stability with 90% capacitance retention. CQDs physical and electrochemical properties were investigated by different characterization methods such as transmission electron microscopy (TEM), Fouriertransform infrared spectroscopy (FTIR), ultraviolet–visible spectroscopy (UV-Vis), scanning Electron Microscopy (SEM), cyclic voltammetry (CV), and galvanic charge discharge (GCD).
John Staser, Dr. (Advisor)
Mohammad Toufiq Reza, Dr. (Committee Member)
Trembly Jason, Dr. (Committee Member)
Kordesch Martin, Dr. (Committee Member)
104 p.
Chemical Engineering; Nanotechnology
CQDs; CDs; Supercapacitors; Coal

Recommended Citations

Citations

  • Rostami, M. (2019). Synthesis of Carbon Quantum Dots (CQDs) from Coal and Electrochemical Characterization [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1564529680895913

    APA Style (7th edition)

  • Rostami, Mohammadreza. Synthesis of Carbon Quantum Dots (CQDs) from Coal and Electrochemical Characterization. 2019. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1564529680895913.

    MLA Style (8th edition)

  • Rostami, Mohammadreza. "Synthesis of Carbon Quantum Dots (CQDs) from Coal and Electrochemical Characterization." Master's thesis, Ohio University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1564529680895913

    Chicago Manual of Style (17th edition)

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This open access ETD is published by Ohio University and OhioLINK.